Convert a pathname and a project identifier to a System V IPC key


(PHP 4 >= 4.2.0, PHP 5)

ftokConvert a pathname and a project identifier to a System V IPC key

Описание

int ftok ( string $pathname , string $proj )

The function converts the pathname of an existing accessible file and a project identifier into an integer for use with for example shmop_open() and other System V IPC keys.

Список параметров

pathname

Path to an accessible file.

proj

Project identifier. This must be a one character string.

Возвращаемые значения

On success the return value will be the created key value, otherwise -1 is returned.

Смотрите также

  • shmop_open() - Резервирование или использование блока разделяемой памяти
  • sem_get() - Get a semaphore id